M. H.
M. H. is credited as writer on 7 issues, penciller on 7 issues and inker on 7 issues in grailworth's catalog, 6 issues of them across 3 series we value.
Every issue
Captain Marvel Jr. (1942) 2 issues
Gabby Hayes Western (1948) 1 issue
The Marvel Family (1945) 3 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.